Shaping a fluid cavity of a flow control actuator for creation of desired waveform characteristics

摘要

Apparatus and methods provide for a flow control actuator having a fluid cavity that is shaped to create periodic waveforms within the resulting resonant actuating flow with predetermined characteristics for actuating a high-speed fluid flow. According to various embodiments, a flow control actuator includes a power source for exciting the actuator fluid at a resonant frequency and a cavity shaped according to resonant macrosonic synthesis principles to maximize the exit velocity of the actuating flow at an orifice of the actuator.

主权项

1. A flow control actuator for augmenting an external high-speed fluid flow, the actuator comprising:
a power source operative to excite fluid within the actuator to create an actuating flow; a cavity configured to contain the fluid within the actuator and shaped according to resonant macrosonic synthesis principles to create a predetermined waveform in the actuating flow when excited by the power source to a resonant frequency that comprises an amplitude at an exit end of the cavity that is sufficient to control the external high-speed fluid flow; and an orifice positioned at the exit end of the actuator between the external high-speed fluid flow and the cavity such that the actuating flow comprising the predetermined waveform and amplitude issues from the orifice to the external high-speed fluid flow at the resonant frequency when excited by the power source, wherein the power source comprises two diaphragms located on opposing ends of the cavity, and wherein the orifice is positioned at approximately a midpoint between the two diaphragms.